Disk talking-machine record



H. QIGQNZALEZ DISK TALKING MACHINE RECORD Filed March 13, 19 29 Feb. 10,1931.

I Y Inventor Mar/0 @W QZ V Aiorney I Patented Feb. 10, 19 31 110110310conmno GONZALEZ, or CHICAGO, rumors DISK TALKING-MACHINE RECORDApplication filed Iarch 1a, 1929. Serial ms. 846,897.

This invention relates to records used for talking machines and moreparticularly to a sound record having a plurality of sound grooves onthe surface of the record.

The primary object of the invention is to provide a record of the typedescribed with a plurality of sound grooves whereby several differentkinds of music, songs, or other, vibrations may be reproduced.

1 A still further object of the invention is to provide a record havinga plurality of sound grooves for the top and bottom surface of the disk,the grooves being arranged in parallel volute spirals and the startingand terminating point of each of the ooves being in a direct center lineof the disk.

My invention will be best understood from a study of thefollowingdescription taken in connection with the accompanying drawings:

Figure 1 is a top or plan view of my invention showing one em dimentthereof, and

Figure 2 15 a top or plan view of another embodiment of my invention.

In one embodiment of my invention as best illustrated in Figure 1, Iemplo a disk 5 having two volute'spirals or soun grooves A and B,thereon, parallel with each other and disposed one within the other. i

Attention is called to the fact that the start ing point of each of thegrooves is on a direct center line of the disk and that each of thegrooves terminates likewise in a direct center line of the disk. It isreadilyapparent then,

grooves and each of said grooves being a comthat by using this kind of arecord, two different kinds of music, son s'or anykind of vibration maybe recorder? and then reproduced on the record.

In'Figure 2 the invention is shown to include a disk 6, similar to thatof the disk 5, but having three sound grooves instead of two on the disk5. Likewise this disk 6 may also be formed on its top and bottomsurfaces in a corresponding manner, and also the disk 5, if it be sodesired.

Attention is also called to the fact that the sound grooves A, B, and Con the disk also start and terminate in a direct center line of thedisk. This is to obviate the necessity of indicia for indicating thestarting and finish of each groove so that the stylus may be placed atthe beginning of the selected groove without losing a great deal of timein locating the beginning of the selected groove. Each of the disks 5and 6 are provided with a hole in the center of the disk whereby thesame may be conventionally placed upon the turntable of a conventionaltalking machine, and the stylus of the recording device may be placed ineither of the grooves A, B, or A, B, C, of the respective disks.

I From the foregoing description, it will be seen that I have provided arecord whereby several difi'erent kinds of music, son s or other kind ofvibration may be selective y reproduced and is capable of use on anordinary type of phonograph or talking machine.

Even though I have herein shown certain embodiments of the preferredembodime'ntoi? my invention, nevertheless it is to be understood thatchanges in the details of the construction thereof may be resorted to,without departing from the spirit or scope of the invention ashereinafter claimed.

- Having thus described my invention, what,

I wish to claim is:

A sound record comprising a disk'having a plurality of sound groovesprovided thereon, said grooves being in parallel volute spirals, thestarting and terminating oints of the grooves being in a direct centerme of the disk, and the convolutes of one of said grooves arranged inalternate relation with 'respe'ctto the convolutes of the other of saidplete sound selection.

In testimony whereof I aflix my signature. HONGRIO- CONRADO GONZALEZ.

